Optimization of the mechanical strength of the pedal pin produced with a three-d printer depending on production parameters

Nowadays, 3D printers, which are used in many fields such as automotive, machinery, space, aircraft and medical, are increasing their popularity day by day. Mechanical strength values are very important in 3D printers that can produce using raw materials such as plastic, metal and ceramic, especially for the production of plastic parts. The mechanical properties of the plastic part manufactured with a three-dimensional printer can be affected by factors such as ambient conditions (temperature, humidity, etc.) and production parameters, depending on the type of material used. In this study, the production parameters of polyethylene terephthalate glycol (PETG) material were investigated considering the maximum mechanical strength. In this study using fused deposition modeling type 3D printer, while the mechanical properties of the PETG material are evaluated, the parameters of nozzle temperature, layer height, cooling fan speed, printing speed, line thickness, mesh direction and mesh overlap ratio are taken into account. Mechanical strength has been measured considering the ASTM D638 standard. In order to obtain the maximum tensile strength with the minimum number of tests, the taguchi method was used in this study. With the test results, the highest tensile strength is 235 ° C nozzle temperature, 0.2mm layer height, 0 cycle / minute cooling fan speed, 25mm / s printing speed, 0.2mm line thickness, mesh direction parallel to the drawing direction and 20% mesh overlap has been obtained. In order to provide an exemplary study to the literature considering the material data of the sample with maximum tensile strength, an automobile clutch pedal box simulation using the pivot pin produced with PETG material from a fused deposition modeling type printer was run. And the simulations were verified by tests carried out in the laboratory environment.